My two slide out awning were installed by RVWholesalers. The only change I made, was replace mounting bolts with stainless steel.
I have read where most dealers install the slide-out awnings, my opinion is the reason this is done, it is simple to do, the dealer gets to make extra $$$$ by doing this over the factory's cost of installation.
Congrats on your new RV,
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS